Improvement in revolving road-scrapers



yUNITED STATES PATENT OFFICE.

EDWARD M. DoTY, JoEL L. LITTLE, AND PETER A. son-INDLER, or SPRING- FIELD, oni-o, AssieNoRs To EDWARD M. DoTY, or sAME PLACE.

IMPROVEMENT IN REAVOLVIN'G ROAD-SCRAPERS.

Specification forming'part of Letters Patent No. 106,674, dated August 23, 1870; Vantedated August 13, 1870.

l'o all whom it may concern.'

Beit known that we, EDWARD .li/I. DoTY,

4JOEL L. LITTLE, and PETER A. SGHINDLER,

volving road-scraper, as will be hereinafter fully set forth.

In order to enable others'skilled in the art to which our invention appertains to make and use the same, we will now proceed to describe its construction and operation, referring to the annexed drawings, in which- Figure 1 is a plan view of the entire scraper. Fig. 2 is a rear view ot' the tail board. Fig. 3 is an enlarged vertical section of one of the sides of the scraper, showing the manner ot' attaching the handles. Fig. 4. is a longitudinal vertical section of the scraper. Fig. 5 is a side view ot' a socket passed through the end of the handle, through which the bolt passes to pivot the scraper. Fig. 6 is an enlarged vertical section ot' one of the pawls or dogs which hold the scraper, preventing the same from revolving. Fig. 7 is an enlarged vertical section of the front portion of the scraper. Fig. 8 is a front view of the bottom of the scraper, and Fig. 9 is a longitudinal vertical section of the bottom of the scraper. A

The rst part of our invention consists in constructing the bottom A ofa revolving roadsoraper, both wholl y and in part, of steel plate, the front or cutting part of the same being slightly curved downward, as shown particularly in Fig. 8, so as to aid it in scooping up the dirt. In constructing the bottom in part of steel plate and in part ot' wood we use an iron cleat, c, to unite the two parts, as shown in Fig. 4. This cleat a is riveted to both, uniting them firmly at the joining point.` To strengthen the scraper still more we rivet an angular strap, b, of iron, tothe back of the tailboard B, extending it under the bottom `and lapping it upon the metal part of the bottom,

`and securing it thereto by a rivet or rivets passing down through theV iron cleat a, the steel'plate and theangnlarst-rap fastening the Whole together. The steel bottom is further secured in place by bolts and rivets c through the forward part of the runners (l C, which bolts or rivets unite the upper metal strap, d, with the steel bottom and the steel shoe e, as particular ly shown in Fig. 7. A groove is made in the side board or runner, C, to receive the bottom plate when made either wholly or in part of metal. l

`VThe grabs D D are made with an angular shoulder, to rest on the top edge ofthe tailboard B, and are extended under the bottom,

so as to increase the strength. of this part ot' the scraper.

The sides or runners C C of our scraper are extended down belowv the bottom, so as to make it ot' arocker form, the middle part being about two inches wide, and sloping back to about one inch at the heel. We construct the runners with steel shoes e e, which lighten the draft and protect the runners.

The second part of our invention consists in improvements on the parts connected with the rotating mechanism ot a revolving road-scraper and the handles of the same. We constrnct'a washer,f, ot' an oblong shape, with a slot in the same to receive a key which passes through theinner-end of the pivot-bolt h. This washer is bolted to the inner part of the sides,| as shown in Figs. 3 and 1. The slot in the washerj'holds the key firmly and prevents the turning of the pivot-bolt. On the outer part of the sides a combined box and washer, g, is also fastened, through which the pivot-bolt passes, as seen in Fig. 3.

In the pivot end of the handles E E is fitted a combined box and washer, le, provided with anges-orlugs,to keep from turning. This is countersunk to receive the head of the pivot or axle-bolt h.

The pullrod G has arched ends m m and cross-braces n n, to give it strength, with two bearings in the handle end of frame for the same, and two slots in cross-bar El, for receiving the sliding stops I I, to which the lower ends of the pull-rod are flexibly attached. These stopsrest on the top of the tail-board B when the scraper is in position for scooping the dirt. Guide-plates p p are bolted upon the top of the cross-bar H, under which the stops I slide, and which hold the stops in their places. A spring, r, throws the stops and pull-rodforward when drawn back. Thisspringis madeiu one piece, and is bolted through the middle to the rear edge of the cross-bar H, its end pressing upon hooked or shouldered pins, i wllich'project from the under side of the sliding stops, near Where they are flexibly attached to the pull-rod. The handle ends of our scrapenframe are strengthened by bands s s riveted to the same. The

' round piece J, which, in fact, constitutes the handle at the rear end of the frame, has the tenons upon its ends cut conical, instead of with a square shoulder, so as to leave as much wood as possible in the tenon and give strength and lightness to this part of the frame. We also brace the frame at the angles with metal braces t t.

Friction plates or straps w fw, of metal. are

' riveted to the rear side ofthe tail-board B, to

prevent the ends of the stops I from Wearing away the Wood in sliding up the tail-board into l. The combination of the bottom A, made of Wood and metal, the angular metal strap or plate b, and metal cleat a, constructed and united substantially as shown and described, and for the purposes herein set forth.

t 2. Ihe combination of the pull-rod G, arched ends m m, cross-braces n n, sliding stops I I,

and shouldered or bent pins/i i, with the crossbar H, plates pp, and spring r, substantially as and for the purposes herein set forth.

3. The sheet-metal covers or protectors 0 O, substantially as and for the purposes herein set forth.

4. In combination with the sides C and bail L, the oblong Washerf, boX g, bolt h, and combined box and'washer k, all Vconstructed 'sub-V stantially as set forth.

5. The combination of the metal and Wood bottom A, with its cutting end curved downward, grooved sides C, metal-bound, and with rocker-bottom, and tail-board B, of a roadscraper, when all are constructed substantially asvset forth.

6. The combination and arrangement of the bottom A, sides C G, tail-board B, with grabs D, and friction-plates w, bail L, and swivel K, washer f, box g, box and Washer k, rails E E, cross-bars H J, slides I I, and rod G, with their various parts, all constructed and operated sul stantially as set forth.

In testimony that we claim the foregoing We have hereunto set our hands this 20th day of December, 1869.

EDWARD M. DOTY. JOEL L. LITTLE. PETER A. SCHINDLER.

Witnesses:

GEO. ARTHUR, B. C. CONVERSE. 

